I recently came across an interesting question regarding optimization in mixed mode which I would like to share here. Feel free to put any potential follow-up questions into the comments.
Let's take a simple mixed mode system with a tilted Standard Lens Object which focus the rays onto an image plane. As you can see on the image below, we have two variable parameters in the whole system:
- Tilt About Y, Non-sequential Parameter
- Thickness Surface 3, Sequential Parameter
If we now optimize with the Merit Function default settings (Wizard Default settings) to minimize the Spot Size, we can observe that both the sequential and the non-sequential variables are optimized:
Have a good day!